[PATCH] pinctrl: rockchip: enable clock when reading pin direction register
heiko at sntech.de
Tue Dec 12 10:19:19 PST 2017
Am Dienstag, 12. Dezember 2017, 09:43:43 CET schrieb Brian Norris:
> We generally leave the GPIO clock disabled, unless an interrupt is
> requested or we're accessing IO registers. We forgot to do this for the
> ->get_direction() callback, which means we can sometimes  get
> incorrect results  from, e.g., /sys/kernel/debug/gpio.
> Enable the clock, so we get the right results!
>  Sometimes, because many systems have 1 or mor interrupt requested on
> each GPIO bank, so they always leave their clock on.
>  Incorrect, meaning the register returns 0, and so we interpret that
> as "input".
> Signed-off-by: Brian Norris <briannorris at chromium.org>
thanks for catching this and it looks good to me, so
Reviewed-by: Heiko Stuebner <heiko at sntech.de>
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